supermicro psu failure and no post after

[Morbid Angel]

So, I saw this coming for a while now, and it happened. My supermicro server was 5.5 years old of continuous rock solid operation running 24/7 under heavy loads often. Then, one day I was going to install an additional fan into it and I shut it off, when I powered it back on well it wouldn't power on. No sign of life what so ever. I thought it was the psu, so I bought after market one (corsair 1000w). But after connecting it I saw the system light up then go dead again. After hours of painful troubleshooting I got it to boot. I figured that, I had to switch on the psu button and the power button at the same time then it started. If I did them one after the other it would not.

So, just wondering if anyone had any experience with such event. I am working on the system now, no problem. Renders, performs as it did.

Any ideas welcome!

[Morbid Angel]

I got it working. It was the cmos battery that died and with it out, the power on was flaking out like that. Replaced the battery and all is good!

[3dcrgr]

Once had a dead cmos battery that all the time reset bios on my render node.
Because of that constant bios resets the time was not set properly in windows, which caused a windows error (something with updates) and there were always BSODs.
Microsoft tech support helped me to solve it. (go figure how..)

So a simple battery replacement (and R-Drive image restore) helped me.

Last time in my life I buy Gigabyte motherboards.
I have an old P55 MSI 8 years-old mobo which works perfect. And this P67 Gigabyte can't hold up for 3 years.